Ma et al. (2025) Spatial and Temporal Variability of Cloud Water Content and Precipitation Efficiency in the Tienshan Mountains

⚠️ Warning: This summary was generated from the abstract only, as the full text was not available.

Identification

• Journal: Journal of Hydrometeorology
• Year: 2025
• Date: 2025-12-08
• Authors: Liyun Ma, Junqiang Yao, Mengying Yao, Dilinuer Tuoliewubieke, Yan Xu
• DOI: 10.1175/jhm-d-25-0134.1

Research Groups

Not explicitly stated in the abstract.

Short Summary

This study investigates the spatiotemporal characteristics of total cloud water (TCW) and precipitation efficiency (PE) over the Tienshan Mountains from 1979–2023, revealing distinct spatial patterns and trends that impact regional water resources and drought risks.

Objective

• To investigate the spatiotemporal characteristics of total cloud water (TCW) and precipitation efficiency (PE) over the Tienshan Mountains for the past four decades (1979–2023).

Study Configuration

• Spatial Scale: Tienshan Mountains, Central Asia (including northern, western, southern Kyrgyzstan, Xinjiang’s Bayanbulak and Hami regions, eastern/central Tienshan).
• Temporal Scale: 1979–2023 (44 years).

Methodology and Data

• Models used: Not explicitly stated as models; reanalysis and observational datasets were used.
• Data sources: ERA5 (reanalysis data), GPCP (observational data).

Main Results

• Total cloud water (TCW) peaks in the northern and western Tienshan, with minima in southern Kyrgyzstan and Xinjiang’s Bayanbulak and Hami regions.
• Vertical profiles show TCW maxima near 500 hPa.
• Summer TCW concentrations (700–200 hPa) exceed those of other seasons, with snow water dominating cloud composition.
• Precipitation decreases from northwest to southeast.
• Precipitation efficiency (PE) exhibits a west-high–east-low distribution.
• Increasing TCW trends in the eastern/central Tienshan alleviate historical aridity.
• Declining TCW trends in northern/western regions exacerbate drought risks.
• The eastern Tienshan shows stable TCW levels with summer growth potential, suggesting opportunities for cloud water resource utilization.

Contributions

• Provides a comprehensive spatiotemporal analysis of total cloud water and precipitation efficiency trends over the Tienshan Mountains for the past four decades.
• Identifies regional vulnerabilities and opportunities for water resource management in this critical "water tower" region.
• Highlights the impact of changing cloud water dynamics on regional water supply and ecological stability.

Funding

Not mentioned in the abstract.

Citation

@article{Ma2025Spatial,
  author = {Ma, Liyun and Yao, Junqiang and Yao, Mengying and Tuoliewubieke, Dilinuer and Xu, Yan},
  title = {Spatial and Temporal Variability of Cloud Water Content and Precipitation Efficiency in the Tienshan Mountains},
  journal = {Journal of Hydrometeorology},
  year = {2025},
  doi = {10.1175/jhm-d-25-0134.1},
  url = {https://doi.org/10.1175/jhm-d-25-0134.1}
}